The charger maximizes the charging current to 0.5 Amps and the voltage to 12.35 Volt. The charger has an efficency of approx. 80% and allows the supply voltage to be in the 15-25 Volt range witch suites the solarpannels. The battery pack has a capacity of 4200 mA at a nominal voltage of 10.8 Volt.
For more information about Li-ion batteries, go to AER Energy Resources.
Contact person for the Munin batteries is: Walter Puccio